Real time display of the current speed, distance traveled, driving time, journey time, calorie consumption and current time.Easy view of the maximum speed, average speed, total driving time distance riding and miunte rotations of the wheel.Options of 12 h / 24 H systems, stopwatch feature and alert feature for bicycle maintenance.length options on shares klometer / mile.Imported sensors to provide stable performance, and accurate speed.Many purposes for bicycles / motor-bicycles (4 "-40").Modern look, waterproof and portable.Real-time indication of acceleration or deceleration for easy control of your speed